Help on these would be appreciated it’s system of equations 1

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

Is a square always, sometimes, or never a parallelogram